Why 540 rpm of pto

At any given horsepower, if you double the speed, you cut the torque in half. At horsepower and rpm, there is roughly half as much twisting force on the shaft as horsepower at rpm. At rpm you nearly double the capacity of the shaft. Blue Grass Eastern IA. A will handle way more than hp.

We have had our set at hp on the Gehl 99 silage blower for 30 years and never broken anything. And yes we lug it down to get all the power out of it at times. Indeed it will. Usually to the left of the steering wheel unless also on the right hand console. If so, yes, place the shuttle in neutral and the gear lever to the side also in neutral to be safe.

Don't forget to have a working effective handbrake and to use it at all times when stationary and especially when vacating the driver's seat. Mursal said:. To start chipping apply the handbrake, put the gear levers into neutral, engage the pto and increase the engine revs to rpm with the hand throttle.

Once you've finished reduce engine revs to tickover, then stop the pto. An operators manual for the tractor might not be a bad idea if you are unfamiliar with the or tractors in general. Boohoo said:. Hooby Farmer Member. Location roe valley. Give her plenty of throttle, it'll be grand. SuperTwo Member. Location Leinster, Ireland. Assuming the pto gearing is the same as an xl the rated pto revs is achieved at rpm for both the and shafts.

The foot throttle should be set to rev to rpmwhen fully depressed so its quite easy. Engage the pto at low revs depress the foot throttle fully and hold then pull the hand throttle until you feel it taking up slack and you cant go too far wrong. SuperTwo said:. Cowabunga said:. I believe your foot throttle, and hand throttle as a consequence, was out of adjustment. It should have revved far higher than that at flat out.

Please forgive the repeat. PTO's are rpm because the original tractor designers in the 's and 's were trying to select a speed for their new PTO. The whole world copied. Isn't that neat? Where did rpm come from? Tubular shields are recommended because U-shaped shields guard against contact only from the sides and top of the shaft.

Metal or plastic tubular shields completely enclose the shaft. Bearings prevent the shield from spinning when contact is made. Some models use a chain connected to a stationary part of the machine to prevent the shield from spinning constantly.

Even if tubular guards are in place, a hazard may exist if the shield is damaged and cannot spin independently from the shaft. A damaged guard can be as hazardous as an unguarded shaft. The tractor's master shield and the implement shield are particularly important because they prevent equipment operators from getting entangled in the system's dangerous rotating connections.

The master shield extends over the top and around the sides of the spline and protects the operator from the rotating spline and front universal joint. People become entangled in this area when boot laces or other articles of clothing catch on the locking pin, bolt, or grease fitting.

The implement shield is similar in appearance to the master shield and offers protection from the rear universal joint and implement connection.

One or more of these shields are frequently missing. Operators sometimes remove shields because they make hitching up equipment inconvenient or impossible. They may remove damaged shields and not replace them. Shields may be missing when used tractors or equipment are purchased.

Protruding components such as the locking pin, bolt, cotter pin, grease fitting, nails, universal joint, and tractor spline readily hook and grab loose or dangling clothes or hair. Boot laces, pant legs, coat or shirt cuffs and tails, drawstrings on windbreakers or hooded sweatshirts, and scarves frequently get entangled. Cases have also been reported of long hair getting caught in PTOs.

Table 1: Lapsed Time vs. Once clothing or hair is caught, the PTO's speed of rotation, combined with the power exerted by the tractor, makes escape unlikely and injury almost certain. Following are some typical outcomes: Clothing is torn completely off the person, resulting in minor injuries such as friction burns, scrapes, sprains, and bruises. Clothing is torn away, and in the process the PTO catches and tears loose or hanging skin.

Injury to the scrotal area is common with this type of accident.